AMD Ryzen Threadripper PRO 3945WX vs AMD Ryzen Threadripper PRO 3955WX

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CPU comparison with benchmarks


AMD Ryzen Threadripper PRO 3945WX CPU1 vs CPU2 AMD Ryzen Threadripper PRO 3955WX
AMD Ryzen Threadripper PRO 3945WX AMD Ryzen Threadripper PRO 3955WX

CPU comparison

In this CPU comparison, we compare the AMD Ryzen Threadripper PRO 3945WX and the AMD Ryzen Threadripper PRO 3955WX and use benchmarks to check which processor is faster.

We compare the AMD Ryzen Threadripper PRO 3945WX 12 core processor released in Q1/2021 with the AMD Ryzen Threadripper PRO 3955WX which has 16 CPU cores and was introduced in Q1/2021.
AMD Ryzen Threadripper PRO (15) Family AMD Ryzen Threadripper PRO (15)
AMD Ryzen Threadripper PRO 3000 (4) CPU group AMD Ryzen Threadripper PRO 3000 (4)
3 Generation 3
Castle Peak (Zen 2) Architecture Castle Peak (Zen 2)
Desktop / Server Segment Desktop / Server
-- Predecessor --
AMD Ryzen Threadripper PRO 5945WX Successor AMD Ryzen Threadripper PRO 5955WX

CPU Cores and Base Frequency

The AMD Ryzen Threadripper PRO 3945WX is a 12 core processor with a clock frequency of 4.00 GHz (4.30 GHz). The processor can compute 24 threads at the same time. The AMD Ryzen Threadripper PRO 3955WX clocks with 3.90 GHz (4.30 GHz), has 16 CPU cores and can calculate 32 threads in parallel.

AMD Ryzen Threadripper PRO 3945WX Characteristic AMD Ryzen Threadripper PRO 3955WX
12 Cores 16
24 Threads 32
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking ? Yes
4.00 GHz Frequency 3.90 GHz
4.30 GHz Turbo Frequency (1 Core) 4.30 GHz
4.20 GHz Turbo Frequency (All Cores) 4.00 GHz

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

AMD Ryzen Threadripper PRO 3945WX Characteristic AMD Ryzen Threadripper PRO 3955WX
-- AI hardware --
-- AI specifications --

Internal Graphics

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

no iGPU GPU no iGPU
GPU frequency --
-- GPU (Turbo) --
-- GPU Generation --
Technology
Max. displays
-- Compute units --
-- Shader --
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory --
-- DirectX Version --

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

no iGPU GPU no iGPU
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
No Codec h264 No
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
No Codec AVC No
No Codec VC-1 No
No Codec JPEG No

Memory & PCIe

Up to 2048 GB of memory in a maximum of 8 memory channels is supported by the AMD Ryzen Threadripper PRO 3945WX, while the AMD Ryzen Threadripper PRO 3955WX supports a maximum of 2048 GB of memory with a maximum memory bandwidth of 51.2 GB/s enabled.

AMD Ryzen Threadripper PRO 3945WX Characteristic AMD Ryzen Threadripper PRO 3955WX
DDR4-3200 Memory DDR4-3200
2048 GB Max. Memory 2048 GB
8 (Octa Channel) Memory channels 8 (Octa Channel)
51.2 GB/s Max. Bandwidth 51.2 GB/s
Yes ECC Yes
6.00 MB L2 Cache 8.00 MB
64.00 MB L3 Cache 64.00 MB
4.0 PCIe version 4.0
128 PCIe lanes 128
252.0 GB/s PCIe Bandwidth 252.0 GB/s

Thermal Management

The AMD Ryzen Threadripper PRO 3945WX has a TDP of 280 W. The TDP of the AMD Ryzen Threadripper PRO 3955WX is 280 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

AMD Ryzen Threadripper PRO 3945WX Characteristic AMD Ryzen Threadripper PRO 3955WX
280 W TDP (PL1 / PBP) 280 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
95 °C Tjunction max. 95 °C

Technical details

The AMD Ryzen Threadripper PRO 3945WX has 70.00 MB cache and is manufactured in 7 nm. The cache of AMD Ryzen Threadripper PRO 3955WX is at 72.00 MB. The processor is manufactured in 7 nm.

AMD Ryzen Threadripper PRO 3945WX Characteristic AMD Ryzen Threadripper PRO 3955WX
7 nm Technology 7 nm
Chiplet Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 ISA extensions SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
WRX8 (sWRX8) Socket WRX8 (sWRX8)
AMD-V, SVM Virtualization AMD-V, SVM
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q1/2021 Release date Q1/2021
-- Release price 1149 $
show more data show more data


Rate these processors

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Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
AMD Ryzen Threadripper PRO 3945WX (100%)
AMD Ryzen Threadripper PRO 3955WX (100%)
⌀ Multi core performance in 3 CPU benchmarks
AMD Ryzen Threadripper PRO 3945WX (81%)
AMD Ryzen Threadripper PRO 3955WX (100%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
AMD Ryzen Threadripper PRO 3945WX AMD Ryzen Threadripper PRO 3945WX
12C 24T @ 4.30 GHz
1307 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.30 GHz
1310 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
AMD Ryzen Threadripper PRO 3945WX AMD Ryzen Threadripper PRO 3945WX
12C 24T @ 4.20 GHz
12828 (82%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
15679 (100%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
AMD Ryzen Threadripper PRO 3945WX AMD Ryzen Threadripper PRO 3945WX
12C 24T @ 4.30 GHz
1652 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.30 GHz
1656 (100%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
AMD Ryzen Threadripper PRO 3945WX AMD Ryzen Threadripper PRO 3945WX
12C 24T @ 4.20 GHz
11500 (84%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
13740 (100%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
AMD Ryzen Threadripper PRO 3945WX AMD Ryzen Threadripper PRO 3945WX
12C 24T @ 4.20 GHz
33450 (76%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
44270 (100%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
AMD Ryzen Threadripper PRO 3945WX AMD Ryzen Threadripper PRO 3945WX
12C 24T @ 4.00 GHz
0 (0%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 3.90 GHz
10843 (100%)

Devices using this processor

AMD Ryzen Threadripper PRO 3945WX AMD Ryzen Threadripper PRO 3955WX
Unknown Unknown

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